Influence of spark plasma sintering and reaction bonded SiC targets on pulsed laser deposition of 6H-SiC thin films

Choutapalli, Sree Harsha; Kumar, H.G. Prashantha; Paneerselvam, Emmanuel; Vasa, Nilesh J.; Jayaganthan, R.

doi:10.1007/s00339-022-06166-9

Cited by 1 publication

(1 citation statement)

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“…The main sintering methods of SiC ceramics are pressureless sintering [ 11 , 12 , 13 ] and reaction sintering [ 14 , 15 ], but the two sintering have low purity. To avoid these drawbacks, researchers have developed the hot pressing sintering method [ 9 , 16 , 17 ], spark plasma sintering [ 18 , 19 , 20 ], microwave sintering [ 21 ], hot isostatic sintering [ 22 ], and so on. Each of these techniques offers its own set of advantages and disadvantages, with numerous valuable research findings to support their efficacy.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Hot Pressing Sintered SiC/Y3Al5O12 Composite Ceramics for Dry Gas Seals

Zou,

Ou,

Zhou

et al. 2024

Materials

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Silicon carbide (SiC) ceramics with high bending strength were prepared by hot pressing sintering (HPS) with yttrium aluminum garnet (Y3Al5O12, YAG) as sintering additive, and the effects of YAG content and sintering temperature on the sintering behavior, microstructure and mechanical properties of SiC ceramics were investigated in detail. The uniform distribution of YAG to form a liquid phase and the driving force provided by hot pressing sintering decrease the sintering temperature, improve the densification of SiC ceramics, and refine the crystal size. By means of suitable sintering conditions with the additional amount of YAG of 5 wt%, the sintering temperature of 1950 °C and a pressure of 30 MPa, the resultant SiC/YAG composite ceramics possesses high sintering and mechanical properties with the relative density of 98.53%, the bending strength of 675 MPa, the Vickers hardness of up to 17.92 GPa, and the elastic modulus of 386 GPa. The as-prepared SiC/YAG composite ceramics are promisingly used as the dry gas seal materials in the centrifugal compressors.

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